Were White House staff involved in prostitution scandal?

Sen. Chuck Grassley, the ranking Republican on the Senate Judiciary Committee, is questioning the U.S. Secret Service about possible involvement of White House staff in the Colombian prostitution scandal.

Given the close working relationship among members of the Secret Service and other White House advance teams, Mr. Grassley wants to know whether Secret Service Director Mark Sullivan and Acting Inspector General Charles Edwards is investigating the possibility that staff from the White House Communications Agency and White House Office of Advance also may be involved in the scandal.